What are the requirements for the appearance control of precision automotive stamping parts?

For the production of precision automobile stamping parts, if the steel raw material is imported stainless steel, the precision hardware parts punched out often have appearance defects such as point damage, crushing and scratching. At the same time, when this happens, add a vacuum cleaner and an exhalation nozzle to the punch, but the effect is not ideal.

In fact, there are many ways to deal with this situation:

• 1. Add a protective film and stick it on the material. When buying the material, ask the supplier. Do not add oil or water during product fabrication. It is better to let the products out one by one during production. Injury! The cost is higher and can be considered.
• 2. It’s really not possible. Try to replace different raw materials. The performance of imported SUS and china ones is sometimes very different. The performance of different china suppliers is also different, but while the performance is sufficient, controlling the cost is also a way to solve the problem!
• 3. Add an appropriate amount of punching and shearing oil (to lubricate the punch and cut the mouth to prevent the generation of waste) to clean the die regularly, sharpen the punch in time, keep it sharp, and reduce the generation of debris is also an effective method! 4. Die The finish must be good. Use a brush to clean the surface of the mold during fabrication. The surface of the mold and the worktable should be cleaned frequently. Iron filings and other particulate impurities should not cause pressure damage on the surface of the material or the mold, but the production efficiency is reduced. Relative to the scrap rate If so, it is acceptable!